Comment by kccqzy
4 hours ago
Ah that’s the reason why reading several articles on the site it felt out of date. For example the website states “Disc brakes have become increasingly popular on mountain bikes and are gaining some popularity for other bicycles” whereas in my experience disc brakes are popular for all kinds of bicycles.
A lot of the information is indeed old, but then so are a lot of bikes. :)
Things are still being updated, primarily by John Allen. There's some writing about changes on the blog: https://sheldonbrown.com/blog/
(I have every expectation that he'd be quite pleased to entertain well-written updates from other parties, if anyone feels like being constructive. John is pretty easy to contact.)